It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Mother of the Believers, Sayyidah Aishah (may Allah be pleased with her) said: "O Messenger of Allah, 'And those who give what they give while their hearts are fearful' - does this refer to those who commit errors and act in sins?" He (peace and blessings be upon him) said: "No, O Aishah. They are those who pray and give charity, and (despite that) their hearts remain fearful."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Amr bin Qays except al-Hakam bin Bashir."
Hadith Referenceالمعجم الأوسط / باب العين / 3965
Hadith Takhrij«أخرجه الحاكم فى «المستدرك» برقم: 3507، والترمذي فى «جامعه» برقم: 3175، وابن ماجه فى «سننه» برقم: 4198، وأحمد فى «مسنده» برقم: 25900، 26344، والحميدي فى «مسنده» برقم: 277، وأبو يعلى فى «مسنده» برقم: 4917، والبزار فى «مسنده» برقم: 195 / 170»