It is narrated from one of the wives of the Prophet (peace and blessings be upon him) (may Allah be pleased with them) that she said: The Prophet (peace and blessings be upon him) sent me to Sayyidah Fatimah (may Allah be pleased with her) (with a message). So she came, and her manner of walking closely resembled the walk of her noble father (peace and blessings be upon him). Then he (peace and blessings be upon him) spoke to her privately and she began to weep. When she was asked about it, she said: "I will not tell anyone the secret of the Messenger of Allah (peace and blessings be upon him)."
This chain is sahih (authentic). The hadith scholars recorded a lengthy narration with a similar meaning through al-Sha'bi, from Masruq, from Sayyidah Aishah (may Allah be pleased with her), but it does not mention the sending (of one of the wives), so it is possible that a different wife is meant here.
Hadith Referenceالمطالب العالية بزوائد المسانيد الثمانية / كتاب المناقب / 3956
Hadith Gradingمحدثین:إسناده صحيح
Hadith Takhrij«حکم الحدیث المطالب العالیہ محققاً تنسیق د. سعد بن ناصر بن عبد العزيز الشَّثري- مکتبہ شاملہ :قال ابن حجر: هَذَا إِسْنَادٌ صَحِيحٌ ، وَقَدْ أَخْرَجُوا مِنْ طَرِيقِ الشَّعْبِيِّ ، عَنْ مَسْرُوقٍ ، عَنْ عَائِشَةَ - رَضِيَ اللهُ عَنْهَا - نَحْوَهُ مُطَوَّلًا ، لَكِنْ لَيْسَ فِيهِ الْإِرْسَالُ ، فَيُحْتَمَلُ أَنْ تَكُونَ امْرَأَةً أُخْرَى . » «انفرد به المصنف من هذا الطريق»