Not graded
Hisn al-Muslim (Fortress of the Muslim) 221
وَقَالَ صلى الله عليه وسلم: ((الْبَخِيلُ مَنْ ذُكِرْتُ عِنْدَهُ فَلَمْ يُصَلِّ عَلَيَّ)).
(He (PBUH) also said: ‘A miser is one whom when I am mentioned to him, fails to send prayers upon me.)
Cited in Hisn al-Muslim (Fortress of the Muslim) (No. 221).