قَالَ أَبُو بَكْرٍ، خَبَرُ ابْنِ عَبَّاسٍ، أَنَّ النَّبِيَّ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ قَالَ: «إِنَّمَا أُمِرْتُ بِالْوُضُوءِ إِذَا قُمْتُ إِلَى الصَّلَاةِ»
Imam Abu Bakr (may Allah have mercy on him) says that the hadith of Sayyiduna Ibn Abbas (may Allah be pleased with them both) is that the Prophet Muhammad (peace and blessings be upon him) said: "Indeed, I have been commanded to perform ablution when I stand for prayer." (That is, in situations other than those mentioned, performing ablution is not obligatory.)