Tafsir of Surah Al-Ahqaf 46:15

Translation of the meaning

And We have enjoined upon man, to his parents, good treatment. His mother carried him with hardship and gave birth to him with hardship, and his gestation and weaning [period] is thirty months. [He grows] until, when he reaches maturity and reaches [the age of] forty years, he says, "My Lord, enable me to be grateful for Your favor which You have bestowed upon me and upon my parents and to work righteousness of which You will approve and make righteous for me my offspring. Indeed, I have repented to You, and indeed, I am of the Muslims."

Shaykh al-Islam Ibn Taymiyyah

وهذا كما فهموا من قوله {وحمله وفصاله ثلاثون شهرا} مع قوله تعالى {يرضعن أولادهن حولين كاملين} أن أقل الحمل ستة أشهر.«مجموع الفتاوى» 31/176

Imam Ibn al-Qayyim

وفهم ابن عباس من قوله تعالى: {وحمله وفصاله ثلاثون شهرا} [الأحقاف: 15] مع قوله: {والوالدات يرضعن أولادهن حولين كاملين} [البقرة: 233] أن المرأة قد تلد لستة أشهر«إعلام الموقعين عن رب العالمين» 1/265