Wiping the feet signifies the knowledge of the "two hands" (pledges) of the Two Orphans, who are: Sa'sa'a and his brother Zayd, the sons of Suhan al-'Abdi.

The Fingers of the Right Foot: These are indicators of the Five Orphans of the Letter 'Fa':

Fidda

Rayhana

Asma' bint 'Umays al-Khath'amiyya

Zaynab al-Hawla' al-'Attara

Fakhita

The Fingers of the Left Foot: These are indicators of the Orphans of Umm Salama:

Maymuna bint al-Harith al-Hilaliyya

Amatullah bint Khalid ibn Sinan al-'Absi

Umm Ishaq

Aminah bint al-Sharid

Umm Malik (the wife of Sa'd ibn Malik).