قُلْتُ أُصَلِّي فِي وَقْتِ فَرِيضَةٍ نَافِلَةً قَالَ نَعَمْ فِي أَوَّلِ الْوَقْتِ إِذَا كُنْتَ مَعَ إِمَامٍ تَقْتَدِي بِهِ فَإِذَا كُنْتَ وَحْدَكَ فَابْدَأْ بِالْمَكْتُوبَةِ .
Translation
Muhammad Bin Yahya, from Ahmad Bin Muhammad, from Al Husayn Bin Saeed, from Usman Bin Isa, from Is’haq Bin Ammar who said, ‘I said, ‘Can I pray an Optional <span class="iTxt">Salāt</span> during the time of an Obligatory (<span class="iTxt">Salāt</span>)?’ He<sup>asws</sup> said: ‘Yes, during the beginning of the time, when he was with a prayer-leader, following him. So when you were alone, so begin with the Prescribed (<span class="iTxt">Salāt</span>)’.
Compiled by Shaykh Muhammad ibn Ya'qub al-Kulayni
Source
License: Free for educational and research use (Thaqalayn Data API)
Provided for research and educational purposes. Original source: Thaqalayn Project. Open License.