From him, from Safwan ibn Yahya, from al-‘Ayyas ibn al-Qasim, from Abu Abdillah عليه السلام, peace be upon him:
Imam al-Sadiq عليه السلام said: “The traveller continues to shorten (the prayer, ‘muqassiran’) until he enters his house.”
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 3, p. 243