‏الطلاق : Hadeeth No:3525 A hadith like this has been narrated on the authority of Ishaq with the same chain of transmitters....

‏الصيام : Hadeeth No:2380 Abu Huraira reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: Observe fast on sighting it (the new moon) and break it on sighting it. But if (due to clouds) the actual position of the month is concealed from you, you should then count thirty (days)....