Abu Abdillah Al-Sadiq (sa.) said: “Whoever fasted one day in the heat of the fast, whereupon he was thirsty, God appointed a thousand angels to stroke his face and proclaim the good news to him, until, when he broke (his fast), God said: “How good is your smell and your spirit! O my angels, witness that I have forgiven him (his sins)!” [Amali, page 349]

قال أبو عبد الله الصادق عليه السلام:
من صام يوماً في الحر فأصاب ظمأً وكل الله به ألف ملك يمسحون وجهه ويبشرونه حتى إذا أفطر قال الله عز وجل:
ما أطيب ريحك وروحك، يا ملائكتي اشهدوا أني قد غفرت له

The Messenger of God (s.a.w.s.) said: “Fasting in the heat is jihad.” [Bihar-ul-Anwar, Volume 96, Page 257]

قال رسول الله صلي الله عليه و آله
الصوم فى الحر جهاد.