Sunan an-Nasa'i #4614 · The Book of Financial Transactions

Sunan an-Nasa'iIt was narrated that 'Abdullah Ibn Abi Awfa about paying in advance. He said
Sunan an-Nasa'i · Book 44 · The Book of Financial Transactions
Sunan an-Nasa'i · كتاب 44 · كتاب البيوع والمعاملات
'We used to pay in advance during the time of the Messenger of Allah and Abu Bakr and 'Umar, for wheat, barley and dates, paying people whom we did not know if they had those things or not.'''Ibn Abza said meaning, similarly
أَخْبَرَنَا عُبَيْدُ اللَّهِ بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا يَحْيَى، عَنْ شُعْبَةَ، عَنْ عَبْدِ اللَّهِ بْنِ أَبِي الْمُجَالِدِ، قَالَ سَأَلْتُ ابْنَ أَبِي أَوْفَى عَنِ السَّلَفِ، قَالَ كُنَّا نُسْلِفُ عَلَى عَهْدِ رَسُولِ اللَّهِ صلى الله عليه وسلم وَأَبِي بَكْرٍ وَعُمَرَ فِي الْبُرِّ وَالشَّعِيرِ وَالتَّمْرِ إِلَى قَوْمٍ لاَ أَدْرِي أَعِنْدَهُمْ أَمْ لاَ ‏.‏ وَابْنُ أَبْزَى قَالَ مِثْلَ ذَلِكَ ‏.‏
Reference : Sunan an-Nasa'i 4614In-book reference : Book 44, Hadith 166