Is supplicating against one's mother considered among the major sins and an act of disobedience, and does it necessitate entry into Hellfire despite repentance and remorse?

If you repent from supplicating against your mother, then know that Allah accepts repentance no matter how great the sin. The conditions for repentance are to cease the sin, to feel remorse, and to resolve not to return to it, along with increasing good deeds. Rejoice in the acceptance of your repentance and strive to be dutiful to your mother and treat her kindly, for showing kindness to one's mother is among the best acts of devotion. Beware of ever again supplicating against your mother or harming her, for disobedience to parents is among the gravest of major sins.