[776] At that time the Buddha, the Blessed One, was dwelling at Sāvatthī, in the Jetavana, Anāthapiṇḍika's monastery. Now at that time the Venerable Nanda, son of the Blessed One's maternal aunt, was handsome, pleasing to behold, inspiring confidence, and shorter than the Blessed One by four fingerbreadths. He wore a robe the measure of the Sugata's robe. The elder bhikkhus saw the Venerable Nanda coming from afar; having seen him, thinking, "The Blessed One is coming," they rose from their seats. When he had come near and they recognized him, they were offended, criticized, and complained: "How can the Venerable Nanda wear a robe the measure of the Sugata's robe?" …
"Is it true, as they say, Nanda, that you wear a robe the measure of the Sugata's robe?"
"It is true, Blessed One."
The Buddha, the Blessed One, rebuked him: "How can you, Nanda, wear a robe the measure of the Sugata's robe? This, Nanda, is not for the arousing of confidence in those without confidence, nor for the increase of confidence in those already confident …"
"And thus, bhikkhus, you should recite this training rule (sikkhāpada): 'Whatever bhikkhu should have a robe made the measure of the Sugata's robe, or larger, there is an offense of pācittiya entailing cutting down. Herein this is the measure of the Sugata's robe for the Sugata: in length, nine spans by the Sugata-span; in breadth, six spans. This is the measure of the Sugata's robe for the Sugata.'"
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.