Assalamu alaikum. 1)I missed one prayer out of laziness last week, then prayed Salat al-Tawbah and increased good deeds. Did I commit apostasy? 2)My late grandfather prayed only congregation Jumu'ah weekly and sometimes Maghrib in Ramadan. May I seek forgiveness for him or did he die on disbelief?

Ustadh AbdulAziz al-Haqqan

Don't make takfeer on yourself and others, and if you suffer from waswas seek medical help that is the priority here.