Narrated Ibn Abbas: When the Messenger of Allah ﷺ came to Madina, they were paying one, two and three years in advance for fruits, so he said: Those who pay in advance for anything, must do for a specified measure and weight with a specified time fixed.
Hadith Referenceسنن ابي داود / كتاب الإجارة / 3463
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح بخاري (2240) صحيح مسلم (1604)
Muhammad or Abdullah bin Mujahid said: Abdullah bin Shaddad and Abu Burdah disputed over salaf (payment in advance). They sent me to Ibn Abi Awfa and I asked him (about it) and he replied: We used to pay in advance (salaf) during the time of the Messenger of Allah ﷺ, Abu Bakr and Umar in wheat, barley, dates and raisins. Ibn Kathir added: "to those people who did not possess these things. " The agreed version then goes: I then asked Ibn Abza who gave a similar reply.
Hadith Referenceسنن ابي داود / كتاب الإجارة / 3464
Hadith Gradingالألبانی:صحيح خ بلفظ ما كنا نسألهم مكان ما هو عندهم | زبیر علی زئی:صحيح بخاري (2243)
The tradition mentioned above has also been transmitted by Ibn Abi al-Mujahid through a different chain of narrators. This version has: "to those people who did not possess these things. " Abu Dawud said: What is correct is Ibn Abi al-Mujahid. Shubah made a mistake in it.
Hadith Referenceسنن ابي داود / كتاب الإجارة / 3465
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح, انظر الحديث السابق (3464)
Hadith Takhrij« انظر ما قبلہ، (تحفة الأشراف: 5117) (صحیح) »
Narrated Abdullah ibn Abu Awfa ibn Abu Awfa al-Aslami: We made a journey to Syria on an expedition along with the Messenger of Allah ﷺ. The Nabateans of Syria came to us and we paid in advance to them (in a salam contract) in wheat and olive oil at a specified rate and for a specified time. He asked (by the people): you might have contracted with him who had these things in his possession? He replied: We did not ask them.
Hadith Referenceسنن ابي داود / كتاب الإجارة / 3466
Hadith Gradingالألبانی:صحيح لغيره | زبیر علی زئی:إسناده صحيح, أبو إسحاق ھو سليمان بن أبي سليمان الشيباني
Hadith Takhrij« تفرد بہ أبو داود، (تحفة الأشراف: 5168)، وقد أخرجہ: صحیح البخاری/السلم 3 (2241)، 7 (2253) (صحیح) »