Sayyiduna Abdullah bin Abbas (may Allah be pleased with him) said: I bear witness that an advance sale (salaf), if it is for a fixed and known term, has been made lawful by Allah Almighty, and He has given permission for it. Then he recited the following verse: "O you who believe, when you contract a debt for a specified term, write it down" [Surah al-Baqarah: 282].
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / 11087
Sayyidah Aishah (may Allah be pleased with her) said that the Messenger of Allah (peace and blessings be upon him) bought wheat from a Jew, fixed a time for payment, and pledged his coat of mail.
It is reported about Sayyiduna Ibn Abbas (may Allah be pleased with him) that he saw no harm in a pledge (rahn) and a surety (qabil) in an advance sale.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / 11088
Amr bin Dinar reports from Sayyiduna Abdullah bin Umar (may Allah be pleased with him) that he saw no harm in a pledge and a guarantor (hamil) along with an advance sale.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / 11089