«لَا يَنْقُصَ مِنَ الْحَدِيثِ إِلَّا مَا لَا تَعَلُّقَ لَهُ بِمَا يُبْقِيهِ مِنْهُ»
Only omit a part of the report that has no meaning-changing connection to the part retained.
The issue is a connection of meaning, not simply whether the words were uttered in one setting. Two statements may have been reported together while each conveys an independent point. Conversely, a very short qualification may govern an entire ruling.
The practical test is whether the words being cited still communicate the original intended claim without the omitted words. Where the answer is no, the abbreviation is not a faithful independent rendering of the report.