TABARANI 1175:
from Masrūq And al-Barāʾ —
[Machine] The Messenger of Allah ﷺ said, "Fast when you see it (the new moon) and break your fast when you see it. But if it is obscured from you, then complete the count of thirty (days). He ﷺ also said, holding up his hand, "The month is like this and like this," meaning twenty-nine or thirty days."
الطبراني ١١٧٥:
عن مسروق و البراء —
قَالَ رَسُولُ اللهِ ﷺ صُومُوا لِرُؤْيَتِهِ وَأَفْطِرُوا لِرُؤْيَتِهِ فَإِنْ غُمَّ عَلَيْكُمْ فَأَتِمُّوا ثَلَاثِينَ وَقَالَ بِيَدِهِ الشَّهْرُ هَكَذَا وَهَكَذَا يَعْنِي تِسْعًا وَعِشْرِينَ
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