الصيام : Hadeeth No:2607
'Imran b. Husain (Allaah be pleased with them) reported Allaah's Messenger (may peace he upon him) having said to him or to someone else: Did you fast in the middle of Sha'ban? He said: No. Thereupon he (the Prophet) said: If you did not observe fast, then you should observe fast for two days....
الحدود : Hadeeth No:4220
This hadith his been narrated on the authority of Abu Huraira through another chain of transmitters with a slight variation of words....