Ibn Awn said: I mentioned to Muhammad (bin Sirin) the hadith of Abd al-Rahman bin Bishr bin Mas'ud from Sayyiduna Abu Sa'id (may Allah be pleased with him) about 'azl, and he said: "It was to me that Abd al-Rahman bin Bishr narrated it."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 14313