I swear upon my mother) is a 1978 Indian Tamil-language Curry Western film directed by R. Thyagarajan and produced by Sandow M. M. A. Chinnappa Thevar.

Thevar later revived the project as Thai Meethu Sathiyam, with Rajinikanth cast in the lead role as Ramachandran had retired from acting by then.

After dressing himself like a cowboy, equipping himself with the zamindar's guns and a horse, and with Ramu as his aide, he fulfils his promise by killing the criminals.

Thevar later revived the film in the late 1970s with a new title, Thai Meethu Sathiyam, but as Ramachandran had retired from acting after becoming the chief minister of Tamil Nadu, Rajinikanth was instead cast.

[11] Despite facing competition from many other Diwali releases,[12] the film became a commercial success, running for over 100 days in theatres,[13] and Rajinikanth "carved out for himself a niche in vendetta roles".