Ibn Umar reported Allah's Apostle (ﷺ) saying like this but with this change of words:
" She sometimes finds a way in one flock and then in another flock." (ES)
Reference (ES): Sahih Muslim 2784 b (ES)
In-book reference (ES): Book 51, Hadith 21 (ES)
USC-MSA web (English) reference(deprecated numbering scheme): Book 38, Hadith 6697 (ES)