Section 125 CrPC: Kyu Nahin Samjh Raha hai?

Main toh phir se padh raha hoon, aur phir se confused hoon Section 125 CrPC k baare mein. Is Section mein kaha gaya ki maintenance k liye karta par aadhaatam karna ho sakta hai, lekin phir kuch jagah kaha gaya hai ki yeh karta par aadhaatam hi hai. Kya main hi galat samjh raha hoon ya koi andar-dar ho gaya hua concept hai jo meri samajh nahi aa raha hai? Kuch books kha karta hai jo karta par aadhaatam karna jaruri hai, lekin kuch book kha karta hai ki yeh aadhaatamikarana karta par hai, na ki aadhaatamikarana hoga.