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." (JA)
Reference (JA): Sahih Muslim 2784 b (JA)
In-book reference (JA): Book 51, Hadith 21 (JA)
USC-MSA web (English) reference(deprecated numbering scheme): Book 38, Hadith 6697 (JA)