He said: Abu ALI al-Hasan b. Abdillah al-Qattan, reported to me from Abu Amru Uthman b. Ahmad, popularly known as Ibn al-Sammak, who reported from Abu Bakr Ahmed b. Muhammad b. Swaleh al-Tammar, who reported from Muhammad b. Muslim al-Razi, who reported from Abdullah b. Raja, who reported from Israeel, from Abu Ishaq, from Habshi b. Junadah, who said:
I was once sitting with abu bakr (LA), when a man came to him and said: "O caliph of the MESSENGER of ALLAH (SWT), the PROPHET (SAWW) , peace be upon him and his progeny, had promised to scrimp to me three measures of dates."
So abu bakr (LA) said: "Call ALI (ASWS) for me." ALI (ASWS) , peace be upon him, came, and abu bakr (LA), told him: "O ABUL HASAN (ASWS) , this man says that the PROPHET (SAWW) , peace be upon him and his progeny, had promised to scrimp him three measures of dates, so give them to him."
He gave him three measures of dates. Then abu bakr (LA), said: "Count them." They found out that each measure contained sixty dates. So abu bakr (LA), said: "The MESSENGER of ALLAH (SWT) spoke the truth. On the night of Hijrah (i.e. migration) I heard the Prophet as we were on our way from Makkah to Madinah saying: O abu bakr (LA), my palm and ALI (ASWS) 's palm are equal to each other in justice."
(Ref Al- Amali Shaikh Mufeed The Thirty Fifth Assembly Hadees No. 3)