Man Lā Yaḥḍuruh al-Faqīh

Hadith 456
fasting
2027 - وَ رُوِيَ عَنِ اَلْعَلاَءِ عَنْ مُحَمَّدِ بْنِ مُسْلِمٍ عَنْ أَحَدِهِمَا عَلَيْهِمَا اَلسَّلاَمُ قَالَ: سَأَلْتُهُ عَنْ عَلاَمَةِ لَيْلَةِ اَلْقَدْرِ فَقَالَ «عَلاَمَتُهَا أَنْ تَطِيبَ رِيحُهَا وَ إِنْ كَانَتْ فِي بَرْدٍ دَفِئَتْ وَ إِنْ كَانَتْ فِي حَرٍّ بَرَدَتْ وَ طَابَتْ».
Hadith.2027 - It is narrated from Al-Ala from Muhammad ibn Muslim, who narrated from one of the two (Imam Al-Baqir (as) or Imam Al-Sadiq (as), peace be upon them), who said: "I asked him about the sign of Laylatul Qadr, and Imam (as) replied: 'Its sign is that its breeze is pleasant; if it is in cold weather, it becomes warm, and if it is in hot weather, it becomes cool and pleasant.'"
Source: Shaykh Muḥammad b. ʿAlī al-Ṣaduq