The yasa: law, memory and Mongol identity

Detail

From yasaq to yasa — what the word first meant

• The historian David Ayalon studied the old texts word by word. His research is the base of this section.
• At the quriltai (the great Mongol assembly of chiefs) of 1206, the word that appears is yasaq.
• Yasaq meant 'law, decree, order' — a ruler's command, not a full law book.
• The few details we know of it are only administrative rules, covering three things:
• the hunt (the big collective hunt, which was also army practice),
• the army (how soldiers were organised and controlled),

• the postal system (the relay stations that carried messages across the empire).

• In 1206, at a quriltai of Mongol nobles on the banks of the Onon river, Temujin — son of Yesugei — was chosen as Genghis Khan of a federation of tribes. This is the meeting at which yasaq is first recorded. [2][3]

• The quriltai was not a one-time event. It stayed the customary assembly used to elect each new Great Khan after Genghis Khan died. [4]
• By the mid-13th century the Mongols were using the shorter word yasa, and using it in a much bigger sense: 'the legal code of Genghis Khan'.
• Britannica describes the yasa as the tribal law of Genghis Khan that became the law of the Mongol state, and notes it regulated personal status and criminal liability among the Mongol elite. [5]

Why the meaning changed — a minority ruling the world

• The problem the Mongols faced after conquest:
• They now ruled the largest empire ever seen up to that time.
• Their subjects were sophisticated urban societies with their own long histories, cultures and laws.

• The Mongols themselves stayed a numerical minority — few rulers among many ruled.

• At its peak in the late 13th century the empire ran from the Pacific Ocean in the east to the Danube river and the shores of the Persian Gulf in the west — about 9 million square miles. [6]

• The solution was a sacred law from their ancestor. If the law came from Genghis Khan himself, it stood above the older laws of the conquered.

What the yasa probably really was

• In all probability the yasa was a compilation of Mongol customary traditions — the old habits and rules of the steppe, gathered together.
• But it was attributed to Genghis Khan. That gave the Mongols a 'lawgiver' figure, like Moses or Solomon in other traditions — a founder whose code cannot be argued with.
• What this did for the Mongols — four gains:
• It cohered the Mongols around a shared set of beliefs.
• It made them acknowledge their affinity (closeness) to the Genghis Khanid line — loyalty to one family.
• It preserved their ethnic identity even as they settled down among town-dwellers (sedentarisation — nomads becoming settled).

• It empowered them to impose their 'law' on the defeated peoples.

• This was an ideology vital to universal dominion — the claim to rule the whole world.

Note: the chapter itself flags that Genghis Khan probably never planned such a code. The idea that the yasa was built up after his death is the chapter's historiographical claim (a scholar's reconstruction), not a proven fact from a surviving law book. No complete text of the yasa survives.

Memory politics — who controls the family story

• As the Mongol lineages separated into rival branches, each pushed its own version of family history.
• The Toluyids (descendants of Tolui, Genghis Khan's youngest son) controlled China and Iran — and therefore controlled the literati (the educated writers there). They pressed their version hardest.
• Il-Khanid Persian chronicles (written in Mongol-ruled Iran) gave long, detailed accounts of the killings and exaggerated the numbers:

• Bukhara's citadel: they reported 30,000 killed, against a figure of 400.

• Yet the same chronicles still eulogised (praised) Genghis Khan. The tone was relief — that "the great killings of the past were over".

• Why exaggerate and praise at the same time? Genghis Khan's heirs now ruled settled subjects. They had to look different from their ancestor to those audiences: the terror belonged to the past, the peace to the present ruler.

The long shadow — the yasa after the Mongols

• Late 16th century, Bukhara: 'Abdullah Khan, a descendant of the Jochid line (from Jochi, Genghis Khan's eldest son), performed Muslim festival prayers at Bukhara's festival ground.
• That festival ground was the very place where Genghis Khan had delivered his "punishment of God" speech.

• His chronicler Hafiz-i Tanish described this Muslim act as done "according to the yasa of Genghis Khan" — Islamic prayer justified by Mongol law.

• 'Abdullah Khan II reigned 1557–98, the greatest of the Shaybanid rulers of Bukhara; under him Shaybanid power spread over Balkh, Samarkand, Tashkent and Fergana. His line descended from Shayban, a son of Jochi and grandson of Genghis Khan; the Shaybanids ruled Bukhara until 1599. [7][8]

• Timur wanted universal dominion too. But he had no Genghis Khanid blood, so he hesitated to declare himself monarch.
• Instead he ruled as guregen — royal son-in-law of the Genghis Khanid family.

• Timur kept the title of emir and kept up the fiction of authority of a line of puppet Chaghatai khans, claiming kinship with them by marriage — hence guregen. [9]

• The lesson: three centuries after 1206, the yasa and Genghis Khanid descent were still the licence to rule in Central Asia.

Prelims Hooks

• The term used at the 1206 quriltai was yasaq, meaning 'law, decree, order'; by the mid-13th century it became yasa = 'the legal code of Genghis Khan'.
• The scholar whose textual research traced this shift is David Ayalon.
• The only known details of the original yasaq concern the hunt, the army and the postal system.
• Genghis Khan was proclaimed at a quriltai in 1206 on the Onon river; he was the son of Yesugei. [2][3]
• The quriltai remained the customary assembly for electing the Great Khan. [4]
• Il-Khanid Persian chronicles raised the Bukhara citadel death toll to 30,000, against 400.
• The Toluyids controlled China and Iran and their literati, and shaped the official family memory.
• Hafiz-i Tanish was the chronicler of 'Abdullah Khan (r. 1557–98, Shaybanid of Bukhara), who prayed at Bukhara's festival ground "according to the yasa of Genghis Khan". [7]
• 'Abdullah Khan belonged to the Jochid line; Shayban was a son of Jochi; Shaybanids held Bukhara till 1599. [8]
• Timur used the title guregen — 'royal son-in-law' — because he lacked Genghis Khanid blood; he formally held the title emir. [9]

Mains Points

• Law as identity, not just administration. The yasa was most likely old Mongol custom re-labelled as the sacred code of one ancestor. Its real work was political: it held a small ruling minority together, tied them to one family, slowed the loss of identity through sedentarisation, and gave them the right to impose "law" on the conquered. Useful as an example of invented tradition legitimising conquest.
• History-writing as a weapon. Il-Khanid chroniclers both inflated the massacre figures (30,000 vs 400) and praised Genghis Khan. Rival Genghis Khanid branches each wrote the family past to suit themselves; the Toluyids won because they controlled the scribes of China and Iran. A clean case for the GS-I point that sources carry the interests of their patrons.
• Legitimacy outlives power. Long after the united empire broke up, Genghis Khanid descent remained the licence to rule Central Asia — Timur ruled as guregen, and 'Abdullah Khan justified Islamic prayer by the yasa. Links forward to Babur and the Mughals, who claimed both Timurid and Genghis Khanid descent. [9]
• The historian's caution. No full text of the yasa survives; the reconstruction rests on later references. Good material for an answer on the limits of evidence in writing nomadic history, where the conquered, not the nomads, wrote most of the records.