بُلُوغُ الْمَرَامِ
Bulugh al-Maram 1144
Marriage
وَعَنْ جَابِرٍ -يَرْفَعُهُ, فِي اَلْحَامِلِ اَلْمُتَوَفَّى عَنْهَا- قَالَ: { لَا نَفَقَةَ لَهَا } أَخْرَجَهُ اَلْبَيْهَقِيُّ, وَرِجَالُهُ ثِقَاتٌ, لَكِنْ قَالَ: اَلْمَحْفُوظُ وَقْفُهُ [1] .
Narrated Jabir (RA) in a Hadith which he attributed to the Prophet (ﷺ) regarding a pregnant (woman) whose husband died: "She has no maintenance rights." [al-Baihaqi reported it. Its narrators are reliable, but al-Baihaqi said, "The correct narration is that which is Mawquf (a saying of a Companion)"].
Sunnah.com reference: Book 8, Hadith 209