Sayyiduna Abu Hurairah, may Allah be pleased with him, narrates this statement of the Prophet Muhammad, peace and blessings be upon him: "When a servant commits a mistake, a dot is placed upon his heart. If he separates himself from it, seeks forgiveness, and repents, then that dot is cleansed. However, if he repeats the same mistake, then it increases. If he commits the mistake again, then it increases further, until (that darkness) overcomes his heart. This is the rust which Allah, the Exalted, has mentioned: 'Rather, a rust has covered their hearts because of what they used to earn.'"
Hadith Referenceصحیح ابن حبان / كتاب الصلاة / 2787
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيحسن - مكرر (926). تنبيه!! رقم (926) = (930) من «طبعة المؤسسة». - مدخل بيانات الشاملة -.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده قوي
Sayyiduna Samurah bin Jundub (may Allah be pleased with him) narrates that the Prophet (peace and blessings of Allah be upon him) said: "Whoever misses Jumu'ah should give one dinar in charity, and if he cannot afford it, then he should give half a dinar."
Hadith Referenceصحیح ابن حبان / كتاب الصلاة / 2788
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيضعيف - «ضعيف أبي داود» (195 - 198).فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده ضعيف