Hadith 4.2
Fasting
He reported God’s messenger as saying, “Many a one who fasts gets nothing from his fasting but thirst, and many a one who prays during the night gets nothing from his night prayers but wakefulness.” Darimi transmitted it. The tradition of Laqit b. Sabira has been mentioned in the chapter on how to perform ablution. [in another part of the Mishkat]
وَعَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «كَمْ مِنْ صَائِمٍ لَيْسَ لَهُ مِنْ صِيَامِهِ إِلَّا الظَّمَأُ وَكَمْ مِنْ قَائِمٍ لَيْسَ لَهُ من قِيَامه إِلَّا السهر» . رَوَاهُ الدَّارمِيّ
Hadith gradings, numbering and translations can differ between editions. For legal rulings or detailed interpretation, consult qualified scholarship and the referenced edition.