Paṭhamasamiddhimārapañhāsutta

sn35.65:1.1 At one time the Buddha was staying near Rājagaha in the Bamboo Grove, the squirrels’ feeding ground.

sn35.65:1.2 Then Venerable Samiddhi went up to the Buddha …

sn35.65:1.3 and said to him:

sn35.65:1.4 “Sir, they speak of this thing called ‘Māra’.

sn35.65:1.5 How do we define Māra or what is known as Māra?”