I asked A'isha what Allah's Apostle ﷺ did first when he entered his house, and she replied: He used tooth-stick (first of all).  

سَأَلْتُ عَائِشَةَ قُلْتُ بِأَىِّ شَىْءٍ كَانَ يَبْدَأُ النَّبِيُّ ﷺ إِذَا دَخَلَ بَيْتَهُ قَالَتْ بِالسِّوَاكِ  

"I said to 'Aishah: 'Tell me, what was the first thing that the Messenger of Allah did when he entered upon you?' She said: 'The first thing he would do would be to use the tooth stick.'"  

قُلْتُ أَخْبِرِينِي بِأَىِّ شَىْءٍ كَانَ النَّبِيُّ ﷺ يَبْدَأُ إِذَا دَخَلَ عَلَيْكِ قَالَتْ كَانَ إِذَا دَخَلَ يَبْدَأُ بِالسِّوَاكِ  

[Machine] I asked Aisha, "O mother, with what did the Prophet ﷺ begin when he entered your house? And with what did he conclude?" She replied, "He would begin with using the siwak (toothstick) and conclude with performing the two rak'ahs of Fajr prayer."  

قُلْتُ لِعَائِشَةَ يَا أُمَّهْ بِأَيِّ شَيْءٍ كَانَ يَبْدَأُ النَّبِيُّ ﷺ إِذَا دَخَلَ عَلَيْكِ بَيْتَكِ؟ وَبِأَيِّ شَيْءٍ كَانَ يَخْتِمُ؟ قَالَتْ كَانَ يَبْدَأُبِالسِّوَاكِ وَيَخْتِمُ بِرَكْعَتَيِ الْفَجْرِ  

[Machine] I asked Aisha, "O mother, with what did the Messenger of Allah ﷺ begin when he entered your house, and with what did he conclude?" She said, "He would begin with using the Siwak (toothstick) and conclude with the two Rak'ahs of Fajr prayer."  

قُلْتُ لِعَائِشَةَ يَا أُمَّهْ بِأَيِّ شَيْءٍ كَانَ يَبْدَأُ رَسُولُ اللهِ ﷺ إِذَا دَخَلَ عَلَيْكِ بَيْتَكِ وَبِأَيِّ شَيْءٍ كَانَ يَخْتِمُ؟ قَالَتْ كَانَ يَبْدَأُ بِالسِّوَاكِ وَيَخْتِمُ بِرَكْعَتَيِ الْفَجْرِ