Al-Adab Al-Mufrad, Book 25, Hadith 445 (English) ⓘ
Ibn 'Abbas said that he said that "the squanderers" were those who wasted money incorrectly.
حَدَّثَنَا عَارِمٌ، قَالَ: حَدَّثَنَا هُشَيْمٌ، قَالَ: حَدَّثَنَا حُصَيْنٌ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ: {الْمُبَذِّرِينَ}، قَالَ: الْمُبَذِّرِينَ فِي غَيْرِ حَقٍّ.
also referenced under: Hadith 445 (Reference) & Book 25, Hadith 4 (In-Book)