長阿含經 26.p86

26.p86

Both Vāsiṣṭha and Bhāradvāja then said to the Buddha, “Setting aside other discussions, we’ve heard that the ascetic Gautama is clearly aware of the way to Brahmā and explains it for others, and he relates how he sees them reborn with Brahmā. Please let the ascetic Gautama discuss the way to Brahmā out of compassion for us. Make it a plain and detailed explanation!”