SIRAH: Time for this and time for that...

Some of the companions of the Prophet (SAW) attained great
spiritual heights. They believed that in order to remain at such
a spiritual level they should always be serious, engaged in
constant worship, turning their backs on all the enjoyments of life
and the good things of the world, neither playing nor relaxing but
keeping their eyes and their minds fixed on the Hereafter and its
concerns, away from common life and its amusements.

Abu Bakr (RA) one day met Hanzalah al-Usaidi (RA) and asked him,
"How are you, Hanzalah?" He replied, "Hanzalah has become a
hypocrite."  Abu Bakr said, "Subhanallah! What are you saying?" He
replied, "When we are with Rasulullah (SAW), he mentions Hell and
Paradise until it is as if we can see them. But when we leave the
Prophet's company and play with our wives and children or busy
ourselves with our properties, we forget much."

Abu Bakr (RA) said, "By God, I have experienced the same thing."

Both of them went to visit the Messenger of God (SAW) and
Hanzalah (RA) said, "O Rasulullah, Hanzalah has become a
hypocrite." He (SAW) asked, "And how is that?" Then Hanzalah
explained it.

Rasulullah (SAW) then said, "By Him in Whose Hand is my soul,
if you were continue at the same level at which you were when
with me and in remembering Allah, the angels would shake (hold) 
hands with you when you are resting and when you walk about, but, O
Hanzalah, there is a time for this and a time for that." And he (SAW)
repeated this phrase three times.

Notes:

Sirah = Story of the life of the Prophet and Messenger of God, Muhammad (SAW).
Rasulullah = The Messenger of God, Muhammad (SAW).
SAW = Sallallahu 'alayhi wasalam (may God's blessing and peace be upon him)
RA = Radhiallahu 'anhu/'anha (may God be pleased with him/her).


Reference:
Halal and Haram in Islam, Dr.Yusuf Qardhawi,
Sahih Muslim