Imam Malik, may Allah have mercy on him, said: I have not heard that the Messenger of Allah, peace and blessings be upon him, ordered expiation for this; rather, he, peace and blessings be upon him, said that one should complete what is an act of worship and abandon what is bad.
It is narrated from Humaid bin Qais and Thawr bin Zaid that the Messenger of Allah, peace and blessings be upon him, saw a man standing in the sun. The Prophet, peace and blessings be upon him, asked about the reason for this. People said: He has vowed that he will not speak to anyone, will not take shade, will not sit, and will remain fasting. The Prophet, peace and blessings be upon him, said: "Order him to speak, to come into the shade, to sit, and to complete his fast."
Hadith Referenceموطا امام مالك رواية يحييٰ / كتاب النذور والأيمان / 1015
Hadith Gradingمحدثین:مرفوع صحيح
Hadith Takhrij«مرفوع صحيح، وأخرجه البخاري فى «صحيحه» برقم: 6704، وأبو داود : 3300، وابن ماجه : 2136، وأحمد فى «مسنده» برقم: 17673، فواد عبدالباقي نمبر: 22 - كِتَابُ النُّذُورِ وَالْأَيْمَانِ-ح: 6»