Sayyiduna Rubayyi narrates: The Noble Prophet (peace and blessings be upon him) said:“Begin fasting (for Ramadan) upon sighting it (the new moon), and end the fast (with Eid al-Fitr) upon sighting it. If it is cloudy, then complete the count of thirty days of Sha’ban, then begin fasting. And if (on the last day of Ramadan) it is cloudy, then complete thirty days of Ramadan, and then end the fast, except in the case that you see the new moon before that (i.e., if you see the new moon after twenty-nine days).”This narration is also transmitted with some other chains.