if I were to take a human being as a khaliil, it would be Abu Bakr...

(snipped from the time when Abu Bakr radhiAllahu anh suggested for the Muslims to announce to the people about Islam)

Umme Khair agreed and they both came to Abu Bakr. On seeing Abu Bakr
(Radhiyallaho Anho) in that miserable condition, Umme Jamil
(Radhiyallaho Anha) could not control herself and began to cry, saying,
"Woe to the ruffians for what they have done to a man like Abu Bakr. May
Allah punish them for their misconduct."

Regardless of what Umme Jamil (Radhiyallaho Anha) said, Abu Bakr
(Radhiyallaho Anho) had the same words on his lips viz., "How is the
Prophet (Sallallaho alaihe Wasallam)?"

Umme Jamil (pointing towards Umme Khair), "Is it safe to say anything in
her presence?"

Abu Bakr, "Do not worry about her. Tell me quickly how is the Prophet
(Sallallaho alaihe Wasallam)?"

Umme Jamil, "He is quite well."

Abu Bakr, "Where is he at this moment?"

Umme Jamil, "He is at Arqam's place."

Abu Bakr, "By Allah! I will not eat anything until I have looked at him."

His mother was very anxious to feed him. She knew that when he had
sworn by Allah he would not break his oath and, therefore, would not eat
under any circumstance. She therefore agreed to take him to Arqam's place.
She had to wait till the street was least frequented by the people and she
was able to take him to that place undetected by Quraish. When they both
reached Arqam's place, Abu Bakr (Radhiyallaho Anho) saw the Prophet
(Sallallaho alaihe Wasallam) and clung to him weeping profusely. The
Prophet (Sallallaho alaihe Wasallam) reciprocated. All the Muslims who
were present there also began to weep bitterly over the condition of Abu
Bakr (Radhiyallaho Anho).

Abu Bakr (Radhiyallaho Anho) then introduced his mother Umme Khair to
the Prophet (Sallallaho alaihe Wasallam), saying, "She is my mother, oh
Prophet of Allah! Pray for her and induce her to accept Islam."

The prophet first prayed for her and then preached to her. She accepted
Islam there and then.

Many people can claim to be lovers while in ease and comfort. But a lover
is a real lover when he is able to prove his love even in tribulation and
adversity.

- taken from email