(20) باب الْحَثِّ عَلَى الصَّدَقَةِ وَلَوْ بِشِقِّ تَمْرَةٍ أَوْ كَلِمَةٍ طَيِّبَةٍ وَأَنَّهَا حِجَابٌ مِنْ النَّارِ
Jarir b. 'Abdullah reported:
People came to to the Messenger of Allah (ﷺ) and they ware dressed in woollen clothes. He (the Holy Prophet) saw their dismal state, as they were suffering from want and the rest of the hadith is the same.
Reference: Sahih Muslim 1017 d
In-book reference: Book 12, Hadith 91
USC-MSA web (English) reference(deprecated numbering scheme): Book 5, Hadith 2222