وَلَا يُجْمَعُ بَيْنَ فَرْضَيْنِ فِي وَقْتٍ بِعُذْرٍ إِلَّا فِي عَرَفَةَ لِلْحَاجِّ ... وَيُجْمَعُ بَيْنَ الْمَغْرِبِ وَالْعِشَاءِ بِمُزْدَلِفَةَ
Under the Hanafi rule taught here, ordinary travel, rain or illness do not by themselves permit actual combining of two Fard prayers into one prayer's legal time. The source gives the Hajj cases of Arafah and Muzdalifah. Apparent combining — one prayer near the end of its own time and the next at the beginning of its own time — is a different matter.
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Prayer Obligation and the Five Daily Prayer Times
وَلَا يُجْمَعُ بَيْنَ فَرْضَيْنِ فِي وَقْتٍ بِعُذْرٍ إِلَّا فِي عَرَفَةَ لِلْحَاجِّ ... وَيُجْمَعُ بَيْنَ الْمَغْرِبِ وَالْعِشَاءِ بِمُزْدَلِفَةَ
Under the Hanafi rule taught here, ordinary travel, rain or illness do not by themselves permit actual combining of two Fard prayers into one prayer's legal time. The source gives the Hajj cases of Arafah and Muzdalifah. Apparent combining — one prayer near the end of its own time and the next at the beginning of its own time — is a different matter.