Thereafter Satī left her husband, Lord Śiva, who had given her half his body due to affection. Breathing very heavily because of anger and bereavement, she went to the house of her father. This less intelligent act was due to her being a weak woman.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
ततो विनिःश्वस्य सती विहाय तं शोकेन रोषेण च दूयता हृदा । पित्रोरगात्स्त्रैणविमूढधीर्गृहान् प्रेम्णाऽऽत्मनो योऽर्धमदात्सतां प्रियः
tato viniḥśvasya satī vihāya taṃ śokena roṣeṇa ca dūyatā hṛdā | pitroragātstraiṇavimūḍhadhīrgṛhān premṇā''tmano yo'rdhamadātsatāṃ priyaḥ
SB 4.4.3