Hi Lal,
I read a bhante’s book which says materiality has one of the 4 origins:
1. Kamma-born materiality (kammaja-rupa)
2. Consciousness-born materiality (cittaja-rupa)
3. Temperature-born materiality (uttuja-rupa)
4. Nutriment-born materiality (aharaja-rupa)
Did the Buddha teach about these stuffs or is this the work of contemporary monks?