´It was narrated from Ibn Abbas that the :` Messenger of Allah (ﷺ) passed by a man in Makkah who was standing in the sun. He said: "What is this?" They said: "He vowed to fast and not to seek shade until night comes, and not to speak, and to remain standing." He said: "Let him speak and seek shade and let him sit down, but let him complete his fast."Another chain from Ibn 'Abbas, from the Prophet (ﷺ), with similar wording. expiation for breaking an oath."
Hadith Referenceسنن ابن ماجه / كتاب الكفارات / 2136
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح بخاري
A marfu’ narration has also been reported from Ibn Abbas (may Allah be pleased with them both) through this chain as well, in a similar manner. «واللہ اعلم» .
Hadith Referenceسنن ابن ماجه / كتاب الكفارات / 2136M