BAYHAQI 10684:
from Ḥakīm b. Ḥizām —
[Machine] He said, "I said, 'O Messenger of Allah, I am a man who engages in buying and selling. What is permissible and what is prohibited in it?' He said, 'O son of my brother, when you buy something, do not sell it until you have received it.' This narration was not heard by Yahya ibn Abi Kathir from Yusuf, but rather he heard it from Ya'la ibn Hakim who heard it from Yusuf."
البيهقي ١٠٦٨٤:
عن حكيم بن حزام —
قَالَ قُلْتُ يَا رَسُولَ اللهِ إِنِّي رَجُلٌ أَشْتَرِي بُيُوعًا فَمَا يَحِلُّ مِنْهَا وَمَا يَحْرُمُ؟ قَالَ يَا ابْنَ أَخِي إِذَا اشْتَرَيْتَ بَيْعًا فَلَا تَبِعْهُ حَتَّى تَقْبِضَهُ لَمْ يَسْمَعْهُ يَحْيَى بْنُ أَبِي كَثِيرٍ مِنْ يُوسُفَ إِنَّمَا سَمِعَهُ مِنْ يَعْلَى بْنِ حَكِيمٍ عَنْ يُوسُفَ
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