The Quran root ب ك ر b-k-r

فَخَرَجَ عَلَىٰ قَوْمِهِ مِنَ الْمِحْرَابِ فَأَوْحَىٰ إِلَيْهِمْ أَن سَبِّحُوا بُكْرَةً وَعَشِيًّا ١١

بُكْرَةً buk'ratan · (in) the morning

So he came out to his people from the prayer chamber and signaled to them to exalt [Allāh] in the morning and afternoon. (Surah Maryam, 19:11)

لَّا يَسْمَعُونَ فِيهَا لَغْوًا إِلَّا سَلَامًا وَلَهُمْ رِزْقُهُمْ فِيهَا بُكْرَةً وَعَشِيًّا ٦٢

بُكْرَةً buk'ratan · morning

They will not hear therein any ill speech - only [greetings of] peace - and they will have their provision therein, morning and afternoon. (Surah Maryam, 19:62)

قَالُوا ادْعُ لَنَا رَبَّكَ يُبَيِّن لَّنَا مَا هِيَ قَالَ إِنَّهُ يَقُولُ إِنَّهَا بَقَرَةٌ لَّا فَارِضٌ وَلَا بِكْرٌ عَوَانٌ بَيْنَ ذَٰلِكَ فَافْعَلُوا مَا تُؤْمَرُونَ ٦٨

بِكْرٌ bik'run · young

They said, "Call upon your Lord to make clear to us what it is." [Moses] said, "[Allāh] says, 'It is a cow which is neither old nor virgin, but median between that,' so do what you are commanded." (Surah Al-Baqarah, 2:68)

قَالَ رَبِّ اجْعَل لِّي آيَةً قَالَ آيَتُكَ أَلَّا تُكَلِّمَ النَّاسَ ثَلَاثَةَ أَيَّامٍ إِلَّا رَمْزًا وَاذْكُر رَّبَّكَ كَثِيرًا وَسَبِّحْ بِالْعَشِيِّ وَالْإِبْكَارِ ٤١

وَالْإِبْكَارِ wal-ib'kāri · and (in) the morning

He said, "My Lord, make for me a sign." He said, "Your sign is that you will not [be able to] speak to the people for three days except by gesture. And remember your Lord much and exalt [Him with praise] in the evening and the morning." (Surah Ali 'Imran, 3:41)