Hadith 1291

Anas said that the Prophet stood in humble supplication for a month and then gave it up. Abu Dawud and Nasa'i transmitted it.

وَعَنْ أَنَسٍ: أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَنَتَ شَهْرًا ثُمَّ تَرَكَهُ. رَوَاهُ أَبُو دَاوُد وَالنَّسَائِيّ

Reference: 5612910
In-book reference: Book 4, Hadith 1291